Revision: 47
http://dl-learner.svn.sourceforge.net/dl-learner/?rev=47&view=rev
Author: jenslehmann
Date: 2007-08-24 04:28:24 -0700 (Fri, 24 Aug 2007)
Log Message:
-----------
added some comments to subsumption hierarchy
Modified Paths:
--------------
trunk/src/dl-learner/org/dllearner/reasoning/SubsumptionHierarchy.java
Modified: trunk/src/dl-learner/org/dllearner/reasoning/SubsumptionHierarchy.java
===================================================================
--- trunk/src/dl-learner/org/dllearner/reasoning/SubsumptionHierarchy.java 2007-08-24 10:28:09 UTC (rev 46)
+++ trunk/src/dl-learner/org/dllearner/reasoning/SubsumptionHierarchy.java 2007-08-24 11:28:24 UTC (rev 47)
@@ -1,3 +1,22 @@
+/**
+ * Copyright (C) 2007, Jens Lehmann
+ *
+ * This file is part of DL-Learner.
+ *
+ * DL-Learner is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * DL-Learner is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
package org.dllearner.reasoning;
import java.util.Set;
@@ -12,9 +31,9 @@
import org.dllearner.utilities.ConceptComparator;
/**
- * Repräsentiert eine Subsumptionhierarchie (ohne äquivalente Konzepte).
- *
- * @author jl
+ * Represents a subsumption hierarchy (ignoring equivalent concepts).
+ *
+ * @author Jens Lehmann
*
*/
public class SubsumptionHierarchy {
@@ -32,19 +51,17 @@
allowedConceptsInSubsumptionHierarchy.add(new Top());
allowedConceptsInSubsumptionHierarchy.add(new Bottom());
}
-
- // es wird geklont, damit Subsumptionhierarchie nicht von außen verändert
- // werden kann
- @SuppressWarnings("unchecked")
+
+ @SuppressWarnings("unchecked")
public SortedSet<Concept> getMoreGeneralConcepts(Concept concept) {
+ // we clone all concepts before returning them such that they cannot be
+ // modified externally
return (TreeSet<Concept>) subsumptionHierarchyUp.get(concept).clone();
- // return subsumptionHierarchyUp.get(concept); // ohne klonen geht es nicht
}
@SuppressWarnings("unchecked")
public SortedSet<Concept> getMoreSpecialConcepts(Concept concept) {
return (TreeSet<Concept>) subsumptionHierarchyDown.get(concept).clone();
- // return subsumptionHierarchyDown.get(concept); // ohne klonen geht es nicht
}
public void improveSubsumptionHierarchy() {
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